Prepare with Nortel 920-253 exam practice material, pass for sure

Updated: Sep 08, 2026

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Nortel 920-253 Exam Overview:

Certification Vendor:Nortel Networks (legacy; now part of Avaya heritage)
Exam Name:Nortel VPN Router (Contivity) Release 6.0
Exam Number:920-253
Exam Price:USD 125 (historical; exam is retired)
Exam Duration:90-120
Available Languages:English
Exam Format:Scenario-based questions, Multiple choice
Certificate Validity Period:Retired / no longer offered
Passing Score:70%
Real Exam Qty:60-70
Related Certifications:Nortel NCDS certification track
Recommended Training:Avaya Learning (legacy Nortel training resources)
Exam Registration:Avaya Certification Information (legacy Nortel programs)
Sample Questions:Nortel 920-253 Sample Questions
Exam Way:Proctored exam (historically delivered via authorized testing centers such as Pearson VUE or Prometric, depending on region/time period)
Pre Condition:Basic networking knowledge (TCP/IP, routing fundamentals, and security concepts recommended)
Official Syllabus URL:https://www.avaya.com

Nortel 920-253 Exam Syllabus Topics:

SectionObjectives
Topic 1: Contivity VPN Router Fundamentals- VPN concepts
  • 1. Site-to-site VPN overview
    • 2. Remote access VPN concepts
      - Platform architecture and components
      • 1. Hardware and software architecture
        • 2. Contivity OS basics
          Topic 2: Operations and Troubleshooting- Monitoring and diagnostics
          • 1. Performance troubleshooting
            • 2. Log analysis and event monitoring
              - High availability
              • 1. Redundancy and failover mechanisms
                • 2. Disaster recovery considerations
                  Topic 3: Routing, NAT, and Traffic Management- Routing integration
                  • 1. Dynamic routing considerations
                    • 2. Static routing configuration
                      - NAT and firewall policies
                      • 1. Address translation concepts
                        • 2. Security policy enforcement
                          Topic 4: IPSec VPN Configuration- IKE and IPSec fundamentals
                          • 1. Authentication and key exchange
                            • 2. Encryption and security associations
                              - Tunnel configuration
                              • 1. Policy-based VPN setup
                                • 2. Route-based VPN setup

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